BuddyPress.org

Hi, i have been trying to create a text box on my website to invite friends manually for everybody including visitors. i have created the form and even tried to use plaxo contact importer on it, everything is working well including plaxo button, but message is not been sent . as i dont know where and how to define the message link which will include a link to accept the invitations. how can i do this.

here is a link to the page : http://www.naijaping.com/invite-your-friends-5/